[Idaman_Group] Optimize Your BitTorrent Download Speed

 

BitTorrent can be fun, as long as you get decent speeds. Not satisfied with your current speeds? These suggestions might help to optimize your download pleasure

1. Hack the max half-open TCP connections

If you're on XP sp2, your TCP connections are limited to a maximum of 10. This might hurt your downloading speed because it wont let you connect to as much peers as you want. It is supposed to slow down viruses because their spreading strategy is to connect to a high amount of ip numbers, but it could cripple your torrent downloads.

A nice way to fix this is to download this patch.

Note: Some people report that their antivir reports the patch to be a Virus, This is not the case. Check out http://www.lvllord.de/ for more details on this

The patch allows you to set the maximum allowed connections to any number you want. Any number between 50 and 100 is ok (more is NOT always better).

Next you need to configure your torrent client to allow 50-100 max half-open TCP connections

uTorrent: Options > Preferences > Advanced options > net.max_halfopen

Bitcomet: Options > Preferences > Connection > max half-open TCP

Now you're ready to go…

A third point of interest is that some "windows updates" revert your tweaked tcp connections back to 10. So it's wise to check this every now and then. You can check this by going to (in windows xp) Start > Control Panel > Administrative Tools > Event Viewer > System… Look for event 4226 (sort by event).

For more details about Windows XP SP2 and Event ID 4226 read David Kaspar's excellent post

If there are a lot of daily occurences it's likely that the max amount of half-open tcp connections was set back to 10. Or you're infected with some nasty spyware…

2. Torrent Client Configuration

In order to apply these tips you need to know your maximum up- and download speed. You can test your bandwidth over here (stop all download activity while testing). Also make sure that you applied the tips provided in our previous posts.

Note that there's a difference between kb/s (kilobits/second) and kB/s (kilobytes/second). To be precise, kB/s = kb/s divided by 8. In this tutorial we use kB/s (like most torrent clients do). This means that you might need to calculate your max speed in kB/s yourself if the speedtest only gives you the results in kb\s (so divide by 8 then).

Settings 1-4 can be found in the options, settings or preference tab of most torrent clients.

1. Maximum upload speed

Probably the most important setting there is. Your connection is (sort of) like a pipeline, if you use you maximum upload speed there's not enough space left for the files you are downloading. So you have to cap your upload speed.

Use the following formula to determine your optimal upload speed…

80% of your maximum upload speed

so if your maximum upload speed is 40 kB/s, the optimal upload rate is 32kB/s

But keep seeding!

2. Maximum download speed

Although setting your maximum download speed to unlimited may sound interesting, in reality it will only hurt your connection. If you still want to be able to browse properly, set your maximum download speed to:

95% of your maximum download speed

so if your maximum download speed is 400 kB/s, the optimal download speed is 380kB/s

3. Maximum connected peers per torrent

Yet another setting that you don't want to max out. I experimented quite a lot with the max connected peers settings and came to the conclusion that both high and low number hurt the download speed of a torrent. The following setting worked best for me.

upload speed * 1.3

so if your maximum upload speed is 40 kB/s, the optimal amount of connected peers per torrent is

40 * 1.3 = 52

I didn't noticed a difference for fast or slow connections here.

4. Maximum upload slots

1 + (upload speed / 6)

so if your maximum upload speed is 30 kB/s, the optimal number of upload slots is

1 + (30 / 6) = 6

3. More Tips

Check seeds and peers
A simple tip, but very important. Always look for torrents with the best seed/peer ratio. The more seeds (compared to peers) the better (in general). So 50 seeds and 50 peers is better than 500 seeds and 1000 peers. So, be selective.

Change the default port.
By default, BitTorrent uses a port 6881-6999. BitTorrent generates a lot traffic (1/3), so isp's like to limit the connection offered on the these ports. So, you should change these to another range. Good clients allow you to do this, just choose anything you like. If you're behind a router, make sure you have your ports forwarded (portforward.com) or UPnP enabled.

Disable Windows Firewall
It sucks. Windows Firewall hates P2P and often leads a life of it's own. So disable it and get yourself a decent (free) firewall, Kerio or Zone Alarm for example.

Turn on Encryption
Encrypting your torrents will prevent throttling ISP's from limiting your BitTorrent traffic. Check out how to enable encryption in Azureus, uTorrent, and Bitcomet, the three most popular torrent clients.

Optimize your internet connection
The TCP optimizer is a freeware utility that optimizes your internet connection. I found it very useful and it helped speeding up my connection for regular internet activity and for downloading torrents. Just download it, and move the slidebar to your maximum download rate (note that it's in kb/s). Don't try to set it higher because that will hurt your download speeds!

Last but not least… Buy a faster connection…

Happy Torrenting!

(this post is a compilation of previous "speed up" posts)

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[Idaman_Group] Tentera amerika ajar.

 

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[Idaman_Group] Mystery of the abandoned hotel in Bali (39 photos)

 

Bedugul is a mountain resort, which is located 48 kilometers north of the city of Denpasar. Located at an altitude of 1,500 meters above sea level and attracts tourists the famous Botanical Garden of Bali. Bedugul also has a beautiful view of Lake Bratan and Lake Buyan, and here is the center of the study of the flora of the region with herbarium and library. However, there is one very interesting point of interest, from the series «abandoned», I love such things - the hotel "PI Bedugul Taman Rekreasi Hotel & Resort". This is a hotel, but it is not quite normal, almost built, but is in a derelict state.

Local Balinese do not know much about this place, paper guides too silent. Tried "Yandex" information, but to no avail, it only leads to images of Russian tourists and bloggers with records a la "Opa, and Bali hotels also have abandoned" or "Very cool zabroshka in Bali," NO pictures and information.

The hotel was not built in a little by all the rules of "good taste", with ramps for the entrance and exit of tourist buses and fountains in front of facades.

Construction of the hotel began in 1993, it was based on money Tommy Suharto - the youngest son of Indonesian President Suharto. But for some reason construction stopped and "preserve" after the terrorist attacks in Kuta in 2002.

Win in old age can neither man nor his creation ... For twenty years, all slowly decaying.

The hotel is not one of the "economy - the class of" well, if you would claim not to "Laksheri" segment, it just that much to "a solid four." These are beautiful statues adorn the main entrance.

Reception desk at the entrance, it was planned to resettle arriving guests.

For the abandoned hotel look after some "sesuriti", so there is still preserved even glass, especially no graffiti, and total defeat.

That such would be the view from the windows of the guest pavilion and the main entrance to the hotel. "Would be" - a combination of cool, that's really our immense "great and mighty."

The hotel also has an outdoor terrace where guests could enjoy the stunning views of the valley and mountains.

then, in theory, the room and a door leading to the balcony huge size.

Some of the rooms at the hotel have even been installed plumbing, most likely in 2002, his discovery was about to take place. 

There are some places quite dirty, but this is an exception to the rule, something like a landfill in the corners under the arches of the stair.

Scenery the hotel are decorated with sculptures of dragons.

This was to be the grand staircase away.

A project is going to be a big deal - it is located very close to Lake Bratan - one of the main tourist attractions of Bali.

Next to the "reception" design was supposed to be a beautiful fountain.

All in all, a very interesting place to visit on the way to Lake Bratan, this hotel is even visible from the top of the program Google Earth, and I tried a little bit more and dig his story, because no one "zabroshku" not thrown for a reason, for such objects are always is something more or less mysterious ......

Source: belorys-kh.livejournal.com

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